There is a tool in the customer administration that you can use to easily renew a large number of domains at once.

For the successful renewal of multiple domains, you must have enough credit on your credit account. It is not possible to perform this action without using the credit account.

The procedure is as follows:

1. In the customer administration, use the Domains tab.
2. In the domain list, select the domains which you want to renew. Below the list, in the drop-down menu, select extension and click on the perform button.
3. In the second step, you will see a list of selected domains, you can choose how many years you want to renew them for (in the drop-down menu). The default value is 1 year.
4. In the third step, you will see the summary of the bulk renewal again, including individual prices and the total renewal price for all available domains for the selected time period. If everything is OK, click the Finish button.

After confirming the renewal process of the selected domains will be initiated, you will see the progress and results of individual domains on the page.

As an alternative to these bulk procedures, you can use the API interface in the customer administration.